From 4e4f4ab113d36b0d228fdf7543cc159b78e20f31 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miodrag=20Milanovi=C4=87?= <mmicko@gmail.com>
Date: Tue, 2 Sep 2025 14:04:28 +0200
Subject: [PATCH] gatemate: update bounding box (#1548)

---
 himbaechel/uarch/gatemate/gatemate.cc | 27 +++++++++++++++++++++++++++
 himbaechel/uarch/gatemate/gatemate.h  |  3 +++
 2 files changed, 30 insertions(+)

diff --git a/himbaechel/uarch/gatemate/gatemate.cc b/himbaechel/uarch/gatemate/gatemate.cc
index a60fc024..9cf39265 100644
--- a/himbaechel/uarch/gatemate/gatemate.cc
+++ b/himbaechel/uarch/gatemate/gatemate.cc
@@ -295,6 +295,33 @@ void GateMateImpl::postRoute()
     }
 }
 
+BoundingBox GateMateImpl::getRouteBoundingBox(WireId src, WireId dst) const
+{
+    int x0, y0, x1, y1;
+    auto expand = [&](int x, int y) {
+        x0 = std::min(x0, x);
+        x1 = std::max(x1, x);
+        y0 = std::min(y0, y);
+        y1 = std::max(y1, y);
+    };
+    tile_xy(ctx->chip_info, src.tile, x0, y0);
+    x1 = x0;
+    y1 = y0;
+    int dx, dy;
+    tile_xy(ctx->chip_info, dst.tile, dx, dy);
+    expand(dx, dy);
+
+    return {(x0 & 0xfffe), (y0 & 0xfffe), (x1 & 0xfffe) + 1, (y1 & 0xfffe) + 1};
+}
+
+void GateMateImpl::expandBoundingBox(BoundingBox &bb) const
+{
+    bb.x0 = std::max((bb.x0 & 0xfffe) - 4, 0);
+    bb.y0 = std::max((bb.y0 & 0xfffe) - 4, 0);
+    bb.x1 = std::min((bb.x1 & 0xfffe) + 5, ctx->getGridDimX());
+    bb.y1 = std::min((bb.y1 & 0xfffe) + 5, ctx->getGridDimY());
+}
+
 void GateMateImpl::configurePlacerHeap(PlacerHeapCfg &cfg) { cfg.placeAllAtOnce = true; }
 
 int GateMateImpl::get_dff_config(CellInfo *dff) const
diff --git a/himbaechel/uarch/gatemate/gatemate.h b/himbaechel/uarch/gatemate/gatemate.h
index d8524351..d7b28753 100644
--- a/himbaechel/uarch/gatemate/gatemate.h
+++ b/himbaechel/uarch/gatemate/gatemate.h
@@ -44,6 +44,9 @@ struct GateMateImpl : HimbaechelAPI
     void preRoute() override;
     void postRoute() override;
 
+    BoundingBox getRouteBoundingBox(WireId src, WireId dst) const override;
+    void expandBoundingBox(BoundingBox &bb) const override;
+
     bool isBelLocationValid(BelId bel, bool explain_invalid = false) const override;
     delay_t estimateDelay(WireId src, WireId dst) const override;
     bool getCellDelay(const CellInfo *cell, IdString fromPort, IdString toPort, DelayQuad &delay) const override;